Bur-block.



F. W. MILLER.

BUR BLOCK.

APPLICATION FILED Nov. 25. 19m.

Patented Mar. 27, 1917.

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- IINITED STATE TATENT QI FICIE.

FREDERICK W. MILLER, OF INDIANAPGLIS, INDIANA, ASSIGNGB, T0 HANSON: &RANDOLPH 00., OF TOLEDO, OHIO, A CORPGRATION OF OHIO.

BUR-BLOCK.

Specification of Letters Patent.

Patented Mar. 27, 1917.

Original application filed May 23, 1913, Serial No. 769,359. Divided andthis application filed November 25,

To all whom it may concern:

Be it known that I, FREDERICK W. MILLER, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented a certain new and useful Improvement in Bur-Blocks, ofwhich the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to bur blocks, and the specific embodiment of myinvention herein shown and described is particularly adapted for use inshipping, holding and displaying engine burs such as are commonly usedby dentists.

The device herein shown comprises a receptacle consisting of a circularlower member or base part, and a cover therefor, the said base partbeing provided with a centrally-disposed post or stud. Disposed in thesaid base part and fitting snugly therein is a block provided with acentral opening into which the before-mentioned post projects. The depthof the opening in the block is slightly less than the height of the postwhich projects therein, in order that the lower portion of the block mayclear the bottom of the receptacle, thereby permitting the block to bereadily turned within the receptacle. The block is provided with aplurality of annular steps or ledges, there being a plurality ofopenings drilled in each of the ledges. Each of these openings isdesigned to receive an engine bur.

The device herein shown and described'is also disclosed in my co-pendingapplication, Serial No. 769,359, which has resulted in Patent No.1,121,934: and of which the present application is divisional. Theclaims forming a part of my present application are directed to theconstruction and combination of parts whereby the bur block and itsassociated cover constitute an excellent shipping and pacln'ng case, inwhich the burs may be transported without danger of the same beingdisplaced or injured on route.

The particular advantages of the construction herein described andsubsequently claimed, are as follows:

The bottom of the base part of the bur block receptacle is upwardlydished so that in spite of irregularities in the surface of a desk ortable upon which the base of the re- Serial No. 873,894.

ceptacle is placed, the same will be adequately supported at or near itsperiphery, thereby preventing it from turning readily when the rotatableblock is turned. The bearing of the wooden block, although ofinexpensive construction, provides a sufliciently rigid support for theblock, at the same time permitting the block to turn very easily withinthe receptacle. The annular ledges or steps in the rotatable block serveto display all of the burs and make it possible to grasp any desiredbur.

The receptacle cover is so shaped that the bur block filled with a grossor any other number of burs can be shipped in a light carton withoutdanger of the individual burs falling out of the holes provided in therotatable block. It is thus possible to ship a full gross of burs allmounted in place in the bur block with the assurance that they willarrive at their destination in place as originally packed. The upper andlower sections of the receptacle are preferably nickel-plated, orotherwise highly polished. It is of course desirable from the standpointof the dentist to keep this receptacle highly polished in order that itmay present an attractive appearance. hen it is desirable to polish thereceptacle the rotatable block maybe readily lifted out of the base partof the receptacle, thus enabling one to wash and polish the receptaclewithout danger of wetting the wooden block, thereby causing it to swell,and without danger of daubing v therotatable block or burs with thepolish which may be employed.

In the drawings illustrating my invention: 7

Figure 1 is a cross-sectional view taken through the device with thecover in place, showing a number of burs disposed in the holes in therotatable block; and

Fig. 2 is a plan view with moved. v

Similar reference numerals refer to similar parts throughout the severalviews.

In the drawings, 3 represents the base the cover rein the block 6 ispreferably provided with a metallic lining 7 in order to do away withthe excess wearing on the parts which would otherwise result. It shouldbe noted that the bottom of the block 6 is spaced slightly from thebottom of the base part 3. The said block being supported entirely bythe central post 5, may be readily rotated within the receptacle basepart 3. Thus any bur carried by the block may be readily removed fromthe same.

The block 6 is provided with a plurality of annular steps or ledges 8,in each of which there is drilled a plurality of holes 9. These holes 9are intended to receive engine burs 10, as clearly shown in Fig. 1. Asuitable name plate 11 carried by the top of the block adds materiallyto the general appearance of the same.

An important advantage which the construction here shown has, is thatafter a dentist has been supplied with the complete block, including thereceptacle, he can subsequently buy full grosses of burs mounted in thewooden block only. Thus the rotatable block, filled with burs, may beshipped to a dentist who can replace the old block with a new one filledwith burs. Since the wooden blocks themselves are inexpensive, theyprovide a convenient means of packing a gross of burs to be sent to adentist already supplied with the receptacle.

As has previously been pointed out cover 4 is so shaped that the bursmay be shipped in a light carton without danger of the inclividual bursfalling out of the holes provided in the block. This result isaccomplished by providing the cover 4 with annular steps or shoulders asillustrated in the drawings. The steps or shoulders need not necessarilybe as pronounced as the steps found on the block. It will be seen thatby providing the cover with annular steps or shoulders, as set forth,the distance from the top of each bur to that portion of the coverdirectly above it is made less than that portion of the bur embedded inthe block. Consequently, when the several burs are in their proper holeswith the cover in place, the burs may be shipped without danger of theburs being displaced, the block and cover thus constituting an idealpacking and shipping case. At-

tention is directed to the fact that if any one of the shorter bursshould be placed in the wrong opening in the block, 2'. 6., in a hole inone of the upper steps of the block, the

.with the receptacle will be likely to order a new block containing afull gross of burs since the dentlst will appreciate the convenience ofbeing able to slip the new block into the receptacle which he alreadyhas.

What I claim and desire to secure by Letters Patent of the United Statesis:

1. A packing and shipping case for elongated articles, comprising acircular block provided with a plurality of steps, openings in each ofsaid steps arranged to receive the articles to be packed and shipped,and a substantially cone shaped cover arranged to be fitted over saidblock, and adapted to prevent the said articles from being displacedfrom their respective openings in the block when the cover is positionedover the block.

2. A packing and shipping case for burs and similar articles, comprisinga circular block, a plurality of annular steps formed on said block, aplurality of vertical openings in each step, each adapted to have one ofthe articles loosely disposed therein, and a substantially cone shapedcover arranged to be fitted over said block, said cover being providedwith annular steps arranged to prevent the several articles from beingdisplaced from their respective openings when the cover is positionedover the block.

3. A shipping case for burs and similar elongated articles, comprisingin combination a circular receptacle, a block rotatably disposed in saidreceptacle provided with a plurality of annular steps, a plurality ofvertical openings in each step arranged to have one of the articlesloosely disposed therein, and a substantially cone shaped cover providedwith a plurality of annular steps adapted toprevent displacement of theseveral articles from their respective openings in the block when thecover is in position.

In witness whereof, I hereunto subscribe V my name this 21st day ofNovember, A. D.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

